Coating composition



P 'oa. s1,'1ess UNITED STATES PATENT. OFFICE Friedrich Mk, II

erdingen, Germany, assignor to I. G. Farbenindustrle Aktiengelcllschaft, Frankfort-on-the-Main, Germany No Drawing. Application March 10, 1931, Serial No. 523,951. In Germany March 27, 1930 Claims.-

15 The resins used for this purpose are known as mixed acid resins of the polyhydrlc type. They are obtained, for example, out of gl erol, glycol, polygiycols or polyglycerols, gl erol ethe'rs, pentaerythrite, mannitol, sorbitol and the like by simuitaneousor successive esterification with a monobasic acid containing several unsaturated linkages, such as linoleic-acid, the dehydration products" of ricinoleic' acid, eleostearic acid etc. and a polybasic acid, such as phthalic acid, trimellitic acid, succinic acid, maleic acid, diglycollic acid or'thiodiglycollic acid etc.

For the manufacture and stabilization of the emulsions an addition of a known emulsifying agent may be used, such as for example alkali metal sulfonates of polyalkylated hydrocarbons, for example, the salts of diisopropyl naphthalene sulfonic acid or dibutyl naphthalene sulfonic acid, salts of sulfonated tar oils or of sulfonateii fatty acids, but I prefer the ammonium salts of high molecular aliphatic carboxylic acids, such as wax acids, montanic acid, resin acids or the ammonium salts of alkali soluble proteins, such as, for example, casein. The use of ammonium salts the volatile base gradually evaporates and the acid is set free whereby the resistance of the coating materials against water is improved. (Dryers, such as salts of high molecular organic 45 acids, for-example, the manganese salt, lead salt and cobalt salt of-naphthenic acid, of the linoleic acid or of a resin acid, may be added to accelerate the drying. The employment of organic solvents is quite unnecessary insdar as oily or soft resin-like condensation products serve as starting materials. when employin more highly condensed, hard, resin-like products, solvents. such asaliphatic and aromatic hydrocarbons, alcohols, ketones, esters and. ethers or mixtures a thereo fmaybe used, such as white spirit, toluene,

or salts of other easily volatile bases has the advantage that after the application of the masses butyl alcohol, acetone, propyl ether, ethylbutylate or mixtures of these solvents. The composition of the resin-like condensation product may vary within wide limits both with respect to the kind of material selected and also with regard to the 5 respective propoi'tions of the starting materials;. the sole condition is that the products must possess a suillclent degree of drying power. As fillers are suitable those substances which are customarily employed in the manufacture of 10 primers and surfacers, such as ierric oxide, ground slate or talcum, etc.

The invention is illustrated by the following examples:

' Example 1 parts by weight of a condensation product from 368 parts by weight of plycerine, 834 parts by weight of linoleic acid and 592 parts by weight of phthahc anhydride are worked up to a stable emulsion with the addition of about 1% of a 20 siccative (0.5 part by weight of manganese naphthate and 0.5 part by weight of lead naphthate) and a solution of one part by weight of the sodium salt of diisopropyl naphthalene sulfonic acid and 4 parts by weight of the ammonium soap of a saponiflable wax in 130 parts of water. Then 300-500 parts by weight of a filler, consisting of ferric oxide,-ground slate and talcum. are made into 'a paste with 300-600 parts of water and ground with the above ascribed resin emulsion. The mass can beem o'redas a suriacer and is applied either by iheans of, a spatula or after sumcient dilution with water by means of brushing or spraying on absorbent-foundations, such as, for example, sheets of wood fibre and according to the thickness of the layer gives, after 2-3 hours drying at about 60-80 0., a surface or priming which polish'a well.

Example 2 mo parts of a soft artificialproduct resulting from the reaction between 92, parts of glycerol, parts of phthalic anhydride and 280 parts of eleoctearic acid with admixture of a small amount 0! the lead and manganese salt of a fatty acid with high molecular weight are emulsified with a solution of 3 parts by weight of casein and 0.1 part of a'mmoniain 120 parts-of water. Then .300-500 parts by weight of afiller consisting of 5b ferric oxide, ground slate and talcum are made into a paste with 300-500 parts of waterand ground with the above described resin emulsion. Thgkmiiss can be employed as described in Excomposition comprising a filler and as binding agent an aqueous emulsion of a condensation product from a polyhydric alcohol, phthalic acid and linoleic acid. v

2. As a new composition of matter a coating composition. comprising a filler and as binding agent an aqueous emulsion of a condensation :paiuct from glycerol, phthalic acid and linolei 3. As a new composition of matter a coating composition comprising ground slate'and as binding agent an aqueous emulsion of a condensation product from gylcerol, phthalic acid and linoleic acid.

4. A composition of matter comprising a filler and a binder comprising an aqueous emulsion of a condensation product of a polyhydric alcohol, a polybasic acid and an unsaturated fatty acid selected from the group consisting of linoleic acid. eleostearic acid and the dehydration products of ricinoleic ma.

' 5. A composition of matter comprising a filler and a binder comprising an aqueous emulsion of a condensation product of a polyhydric alcohol, phthalic acid and an unsaturated fatty acid selected from the. group consisting oi linoleic acid. eleostearic acid and the dehydration products of ricinoleic acid.

as composition of matter'comprising a filler and a binder comprising an aqueous emulsion of a condensation product of a polyhydric alcohol, phthalic acid and an unsaturated fatty acid selected fr the group consisting of linoleic acid. eleostearic d and the dehydration products of ricinoleic acid and an emulsifying agent.

7. A composition oi'matter comprising a filler and a binder comprising an aqueous emulsion of a condensation product of glycerol, phthalic acid and an unsaturated fatty acid selected from the group consisting of linoleic acid, eleostearic acid and the dehydration products or ricinoleic acid.

8. A composition of matter comprising a filler and a binder comprising an aqueous emulsion of a condensation product of a polyhydrlc alcohol, a-polybasic acid and an unsaturated fatty acid selected from the group consisting of linoleic acid, eleostearic acid and the dehydration products of ricinoleic acid and an aqueous ammoniacal solution'of casein. Y

9. A composition oi matter comprising a filler and a binder comprising an aqueous emulsion of a condensation product of a polyhydric alcohol, a polybasic acid and an unsaturated fatty acid oi an oil selected from the group consisting oi linseed oil and China-wood oil.

10. A composition of matter comprising a filler and a binder comprising an aqueous emulsion of a condensation product of a polyhydric alcohol, a'polybasic acid and an unsaturated fatty acid of an oil selected from the group consisting of linseed oil and China-wood oil and an emulsifying agent.

11. A composition of matter comprising a filler and a binder comprising an aqueous emulsion of a condensation product of glycerol, a phthalic acid and an unsaturated fatty acid of an oil se-.

lected from the group consisting of linseed oil and China-wood oil and an emulsifying agent.

12. A compodtion of matter comprising a filler and a binder comprising an aqueous emulsion of a condensation product of a polyhydric alcohol, a polybasic acid and eleostearic acid.

13. A composition of matter comprising a'illler and a binder comprising an aqueous emulsion of a condensation product of glycerol, phthalic acid and eleostearic acid.

14. A composition oi matter comprising a filler and a binder comprising an aqueous emulsion of a condensation product of a polyhydric alcohol, a polybasic acid and the dehydration products of ricinoleic acid.

15. A composition of matter comprising a filler and a binder comprising an aqueous emulsion of -a condensation product of glycerol, phthalic acid and the dehydration products oi ricinoleic acid.

FRIEDRICH ERICK. 

